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Finding the Fourth Proportional to 286,978.88, 396,025.44 and 159,654.08

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Solution

The fourth proportional to 286,978.88, 396,025.44 and 159,654.08 is: 220,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,978.88 : 396,025.44 = 159,654.08 : x
  2. Step 2: Convert to fraction form
    286,978.88/396,025.44 = 159,654.08/x
  3. Step 3: Cross multiply
    286,978.88x = 396,025.44 × 159,654.08
  4. Step 4: Simplify right side
    286,978.88x = 63,227,077,279.80
  5. Step 5: Solve for x
    x = 63,227,077,279.80/286,978.88
  6. Step 6: Final answer
    x = 220,319.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.